Public Displays of Affection, can be seen in the form of kissing, touching, groping, licking, nuzzling, cuddling, crossing hands into each other's opposite back pockets, etc. Usually spotted among new couples, frisky teenagers, and occasionally the "young at heart" (god help us).

Also, a handheld computer of sorts.

Jen and Craig's PDAs at the table were so intense that there was actually slobber on the green bean casserole.

Damn annoying cuddling,caressing,lovey-dovey smooching; actually any physical contact short the "fist-to-the-face" genre.Oh, right: in the presence of other living beings. Especially your friends! But animals count to, ya know. Spare the damn animals, you fiends! And the vegetation! LET GO!

Tommy and Gina are among friends, holding hands, staring into each other's eyes and slowly but OBVIOUSLY merging their two forms into one.
"eeeek! duck! run! PDA emergency!" rightfully cries observer James